Fix improper escaping in emails sent to users from moderators on Forums

[yani.iliev]

Emails sent to users from moderators on WordPress Forums contain unnecessary escape characters (e.g., there\'s instead of there's). This issue likely arises due to incorrect escaping when generating email content. The issue needs to be fixed to ensure proper rendering of apostrophes and other special characters in email notifications.

Steps to Reproduce:

1. User reports a topic
2. A moderator responds to the report which sends an email notification to the user from step 1.
3. The received email contains improperly escaped characters (e.g., there\'s).

Expected Behavior:
Special characters such as apostrophes should be correctly formatted without unnecessary escape sequences.

[fierevere]

Thats the message was sent by the report reply form

there's a copy of message was sent to user:
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